A continuous manganese sulfate leaching reaction tank and system

Abstract

The application relates to a manganese sulfate continuous leaching reaction tank and system and relates to a manganese sulfate processing device, which comprises a tank body, a liquid inlet and a liquid outlet are arranged at the upper end of the side wall of the tank body, a flow guide plate, the cross section of the flow guide plate is in an arc shape, the flow guide plate has a preset height, the flow guide plate is detachably fixed on the inner surface of the side wall of the tank body and forms a flow guide channel parallel to the axial direction of the tank body, the liquid outlet is located in the coverage range of the flow guide plate on the side wall of the tank body, and the lower end of the flow guide plate is higher than the bottom wall of the tank body. In the application, the flow guide plate is detachably mounted with the side wall of the tank body to form a flow guide channel, the flow guide plate is convenient to disassemble and easy to clean the formed crystals in the flow guide channel, meanwhile, the flow guide plate adopts an arc structure, and the abrasion of the slurry on the flow guide plate is reduced.

Description

Technical Field

[0001] This utility model relates to manganese sulfate processing equipment, and in particular to a continuous manganese sulfate leaching reaction tank and system. Background Technology

[0002] The traditional process for preparing manganese sulfate solution by leaching involves placing manganese monoxide powder and an acidic solution in a container, and using a stirrer or other methods to ensure uniform mixing and thorough reaction. The device used to perform this operation is called a stirred mixing reactor. Vertical mechanically stirred tanks (vessels, barrels) are the most widely used type of stirred tank in the hydrometallurgical production of manganese sulfate, and they generally consist of a stirring device, a tank body, and stirring accessories.

[0003] Currently, large-scale hydrometallurgical processes in the non-ferrous metal industry mostly employ continuous feeding and discharging methods to achieve continuous automated production. To enhance the mixing or reaction effect of materials and ensure the reaction time in the reactor, flow guiding devices are installed in the reactor to control the flow field. Because auxiliary materials are added during the smelting process, different phases exist, such as liquid, solid, solute, and gas. Due to changes in reaction conditions, some solid phases or precipitated crystals are prone to slagging in the flow guiding pipes, causing blockages. Current flow guiding devices are either integrated with the reactor or separate pipe structures. Integrated structures are difficult to clean when the flow guiding pipes become blocked, resulting in long downtimes. Separate flow guiding pipes, detached from the outer wall of the mixing tank, experience significant impact from the high-speed slurry within the mixing tank, leading to severe wear and frequent replacements, which seriously affects the continuous production of hydrometallurgy. While the reaction tank is acceptable as a single continuous reaction tank, its functionality is insufficient for multiple reaction tanks cascaded in a continuous reaction line. Utility Model Content

[0004] This invention provides a continuous manganese sulfate leaching reaction tank and system, the purpose of which is to solve the problem that existing flow guiding structures are prone to clogging and difficult to clean.

[0005] To achieve the above objectives, embodiments of this utility model provide a continuous manganese sulfate leaching reaction tank, comprising:

[0006] The tank body has an inlet and an outlet provided on the upper end of its side wall.

[0007] The guide plate has an arc-shaped cross-section and a preset height. The guide plate is detachably fixed to the inner surface of the side wall of the tank and forms a flow channel parallel to the axial direction of the tank with the side wall of the tank. The liquid outlet is located within the coverage area of ​​the guide plate on the side wall of the tank. The lower end of the guide plate is higher than the bottom wall of the tank.

[0008] Preferably, the distance between the top of the guide plate and the top wall of the tank is a first distance, which is less than the distance between the liquid outlet and the top wall of the tank.

[0009] Preferably, the guide plate has a first folded edge formed on its side for fixing the guide plate to the side wall, and the first folded edge is fixedly connected to the side wall of the trough by bolts.

[0010] Preferably, a high-temperature resistant rubber pad is also sandwiched between the first folded edge and the side wall of the groove.

[0011] Preferably, the tank is further provided with a stirring device, which is a three-bladed paddle downward-pressing agitator, wherein the lowest blade of the stirring device is lower than the lower end of the guide plate.

[0012] Preferably, the guide plate is further provided with a reinforcing plate on the side away from the tank sidewall, and the reinforcing plate is in contact with the guide plate surface.

[0013] Preferably, the reinforcing plate is located on the front side of the guide plate, the height of the reinforcing plate is the same as the height of the guide plate, and the arc length of the reinforcing plate is at least half the arc length of the guide plate.

[0014] Preferably, an inspection port is also provided on the top wall of the tank, and the inspection port is located directly above the guide plate.

[0015] Preferably, a bypass switching port is also provided on the side wall of the tank, and the bypass switching port is at the same height as the liquid inlet.

[0016] This application also provides a continuous manganese sulfate leaching reaction system, including at least three of the aforementioned continuous manganese sulfate leaching reaction tanks, wherein the outlet of the upstream continuous manganese sulfate leaching reaction tank is sequentially connected to the inlet of the downstream continuous manganese sulfate leaching reaction tank.

[0017] Alternatively, the bypass switching port of the upstream manganese sulfate continuous leaching reaction tank can be connected to the inlet of the downstream manganese sulfate continuous leaching reaction tank.

[0018] The above-mentioned solution of this utility model has the following beneficial effects:

[0019] In this application, a flow guide plate is detachably installed on the side wall of the tank to form a flow guide channel. The flow guide plate is easy to disassemble and easy to clean the crystals formed in the flow guide channel. At the same time, the flow guide plate adopts an arc-shaped structure to reduce the wear of the slurry on the flow guide plate.

[0020] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0021] Figure 1 This is a perspective view of the present invention in three dimensions;

[0022] Figure 2 This is a perspective view of the present invention in the main view state;

[0023] Figure 3 This is a schematic diagram of the interior of the deflector.

[0024] Figure 4 This is a top view of the deflector.

[0025] Figure 5 This is a schematic diagram of slurry flow.

[0026] [Explanation of Labels in the Attached Image]

[0027] 10-Tank body, 11-Inlet, 12-Outlet, 13-Inspection port, 14-Bypass switching port

[0028] 20-Guide plate, 21-First fold, 22-Bolt,

[0029] 30-Mixing equipment

[0030] 40 - Reinforcing plate. Detailed Implementation

[0031] To make the technical problems, technical solutions and advantages of this utility model clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0032] like Figure 1-4 As shown, an embodiment of this utility model provides a continuous manganese sulfate leaching tank 10, including a cylindrical tank 10 with its axial direction vertical. The tank 10 has a top wall at its top end and a bottom wall at its bottom end. An inlet 11 and an outlet 12 are provided on the side walls of the tank 10. A guide plate 20 is provided inside the tank 10. The guide plate 20 has an arc-shaped cross-section and a preset height. The guide plate 20 is detachably fixed to the inner surface of the side wall of the tank 10, and the guide plate 20 and the side wall of the tank 10 form a flow channel for the slurry to flow out. This flow channel is parallel to the axial direction of the tank 10. The outlet 12 is located within the coverage area of ​​the guide plate 20 on the side wall of the tank 10, and the lower end of the guide plate 20 is higher than the bottom wall of the tank 10.

[0033] When slurry flows into inlet 11, as the slurry continues to flow in and reaches the height of outlet 12, due to the principle of communicating vessels, the slurry will flow upward from the bottom of the guide channel and out of outlet 12, achieving dynamic balance of the slurry within the tank 10. When the slurry flow rate is too large, outlet 12 cannot discharge the slurry in time. The slurry entering the guide channel will flow upward past outlet 12 and back into the tank 10 from the top of guide plate 20, achieving an overflow effect.

[0034] In this application, the guide plate 20 is detachably connected to the side wall of the tank 10, making it easy to disassemble and clean when the slurry crystallizes within the guide channel. Furthermore, when the liquid level reaches the height of the outlet 12, the upper end of the guide channel, connected to the interior of the tank 10, helps to balance the air pressure, ensuring smooth slurry flow. When the liquid level is higher than the outlet 12, the guide channel also acts as an overflow channel, preventing slurry from accumulating and crystallizing within the channel over a long period, thus reducing the likelihood of slurry crystallization within the channel.

[0035] In addition, the cross-section of the guide plate 20 is arc-shaped, which can effectively reduce the impact of the stirred slurry on the guide plate 20 and extend the service life of the guide plate 20.

[0036] In order to ensure that the outlet 12 is located within the coverage area of ​​the guide plate 20 on the side wall of the tank 10, the distance between the top of the guide plate 20 and the top wall of the tank 10 is a first distance, which is less than the distance between the outlet 12 and the top wall of the tank 10, so that the upper end of the guide plate 20 is higher than the outlet 12.

[0037] A first folded edge 21 is formed on the side of the guide plate 20, which is used to fix the guide plate 20 inside the tank 10. In this embodiment, the guide plate 20 and the first folded edge 21 are integrally formed, and the first folded edge 21 is formed by bending. The first folded edge 21 is located on both sides in the height direction of the guide plate 20. The first folded edge 21 is fixed to the side wall of the tank 10 by bolts 22.

[0038] Preferably, a high-temperature resistant rubber gasket is sandwiched between the first folded edge 21 and the side wall of the tank 10. The bolt 22 is sequentially inserted through the first folded edge 21, the high-temperature resistant rubber gasket, and the side wall of the tank 10, and is tightened by screwing a nut onto the outside of the tank 10. The high-temperature resistant rubber gasket serves as a seal to prevent leakage at the location where the bolt 22 passes through the tank 10.

[0039] In this application, a stirring device 30 is also provided inside the tank 10. This stirring device 30 is a three-bladed, downward-pressing agitator. The agitator has a drive unit, a transmission shaft, and at least one layer of blades arranged axially along the transmission shaft. The drive unit is located outside the top wall of the tank 10, the transmission shaft passes through the top wall of the tank 10, and the blades are located inside the tank 10. The drive unit drives the blades to rotate via the transmission shaft to stir the slurry in the tank. Since the assembly of the stirring device 30 with the tank 10 is a conventional technique in the art, it will not be described in detail here.

[0040] In this embodiment, the lowest layer of impeller blades in the stirring device 30 is lower than the lower end of the guide plate 20.

[0041] The downforce propeller agitator is an axial flow mixing device specifically designed for slurries or low-viscosity fluids. Its working principle is similar to a marine propeller, generating strong axial flow within the tank through rotating blades, causing the material to circulate from top to bottom. Each layer of blades is tilted forward, with the front end of the blade inclined downwards relative to the rear end; in this embodiment, the tilt angle is 15°. During rotation, the tilted blades create downward separation of the fluid, thus generating a downforce effect within the tank 10.

[0042] like Figure 5 As shown, when using a down-pressure propulsion agitator, the blades exert downward pressure on the slurry. The slurry flows in the tank 10 as follows: the upper part of the blades draws in the slurry, while the lower part pushes it out, creating a downward flow near the agitator 30. Further away from the agitator 30 (i.e., on the sidewall of the tank 10), the slurry flows upward due to the propulsion of the central slurry flow, thus forming a circulating flow. Under the action of the agitator 30, the slurry continuously circulates, effectively preventing sedimentation or even crystallization within the tank 10. Simultaneously, the upward flow of the blades away from the agitator 30 conforms to the flow direction required by the guide channel. With the assistance of the down-pressure propulsion agitator, this not only improves the fluidity of the slurry within the guide channel, reducing the likelihood of blockage, but also agitates and pushes the slurry at the bottom of the tank 10 upward, preventing sedimentation.

[0043] If an upward-type propulsion agitator is used, the flow direction of the slurry in the tank 10 is exactly opposite to that of the downward-type propulsion agitator, which can easily cause the flow in the guide channel to be obstructed, and the slurry is likely to deposit at the bottom of the tank 10 or crystallize in the guide channel.

[0044] Furthermore, a reinforcing plate 40 is provided on the side of the guide plate 20 away from the side wall of the tank 10. The reinforcing plate 40 is in contact with the surface of the guide plate 20. The reinforcing plate 40 is used to protect the guide plate 20 and prevent the slurry from repeatedly impacting the guide plate 20 during the mixing process, which would cause the guide plate 20 to be eroded.

[0045] Preferably, the reinforcing plate 40 is located on the front side of the guide plate 20, and the height of the reinforcing plate 40 is the same as the height of the guide plate 20. The arc length of the reinforcing plate 40 is at least half the arc length of the guide plate 20. Preferably, the reinforcing plate 40 also has a second folded edge on the front side of the guide plate 20. The bolts 22 that fix the guide plate 20 are passed through the second folded edge, the first folded edge 21, the high-temperature resistant rubber pad, and the side wall of the tank 10 in sequence for fixation.

[0046] It should be explained that the arc length of the reinforcing plate 40 is at most equal to the arc length of the guide plate 20.

[0047] Preferably, an inspection port 13 is also provided on the top wall of the tank 10. The inspection port 13 is located directly above the guide plate 20, which facilitates visual inspection of the guide channel.

[0048] Preferably, a bypass switching port 14 is also provided on the side wall of the tank 10, and the bypass switching port 14 is at the same height as the inlet 11. In this embodiment, the central angle between the projection of the inlet 11 on the bottom wall of the tank 10 and the projection of the outlet 12 on the bottom wall of the tank 10 is a straight angle, and the bypass switching port 14 is located on the angle bisector of the central angle.

[0049] Preferably, a drain outlet is also provided at the bottom of the side wall of the tank 10.

[0050] It should be noted that in this application, the liquid outlet 12, the bypass switching port 14, and the drain port through which the liquid flows are all equipped with switching valves for controlling the on / off state.

[0051] This application also provides a continuous manganese sulfate leaching reaction system, including at least three of the aforementioned continuous manganese sulfate leaching reaction tanks, wherein the outlet 12 of the upstream continuous manganese sulfate leaching reaction tank is sequentially connected to the inlet 11 of the downstream continuous manganese sulfate leaching reaction tank.

[0052] Alternatively, the bypass switching port 14 of the upstream manganese sulfate continuous leaching reaction tank can be connected to the inlet port 11 of the downstream manganese sulfate continuous leaching reaction tank.

[0053] In addition to the advantages of the aforementioned continuous manganese sulfate leaching reaction tank, the continuous manganese sulfate leaching reaction system of this application also has the advantage of not affecting the process during shutdown and maintenance.

[0054] Specifically, taking three continuous manganese sulfate leaching reaction tanks as an example:

[0055] When all three manganese sulfate continuous leaching reaction tanks are operating normally, the bypass switching port 14 of the three manganese sulfate continuous leaching reaction tanks is closed, and the inlet port 11 and outlet port 12 of the three manganese sulfate continuous leaching reaction tanks are connected end to end in sequence to realize a series-stage reaction.

[0056] When the second continuous manganese sulfate leaching reactor malfunctions and shuts down, the outlet 12 of the first continuous manganese sulfate leaching reactor is closed, and the bypass switching port 14 of the first continuous manganese sulfate leaching reactor is connected to the inlet 11 of the second downstream continuous manganese sulfate leaching reactor (i.e., the third continuous manganese sulfate leaching reactor in this embodiment). At this time, the slurry bypasses the second continuous manganese sulfate leaching reactor, and the worker drains the slurry in the second continuous manganese sulfate leaching reactor through the drain port and performs maintenance.

[0057] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A continuous manganese sulfate leaching reaction tank, characterized in that, include: The tank (10) has an inlet (11) and an outlet (12) on the upper side wall. The guide plate (20) has an arc-shaped cross-section and a preset height. The guide plate (20) is detachably fixed on the inner surface of the side wall of the tank (10) and forms a guide channel parallel to the axial direction of the tank (10) with the side wall of the tank (10). The liquid outlet (12) is located within the coverage area of ​​the guide plate (20) on the side wall of the tank (10). The lower end of the guide plate (20) is higher than the bottom wall of the tank (10).

2. The continuous manganese sulfate leaching reaction tank according to claim 1, characterized in that: The distance between the top of the guide plate (20) and the top wall of the tank (10) is a first distance, which is less than the distance between the outlet (12) and the top wall of the tank (10).

3. The continuous manganese sulfate leaching reaction tank according to claim 1 or 2, characterized in that: The guide plate (20) has a first fold (21) formed on its side for fixing the guide plate (20) to the side wall. The first fold (21) is fixedly connected to the side wall of the trough (10) by bolts (22).

4. The continuous manganese sulfate leaching reaction tank according to claim 3, characterized in that: A high-temperature resistant rubber pad is also sandwiched between the first folded edge (21) and the side wall of the groove (10).

5. The continuous manganese sulfate leaching reaction tank according to claim 1, characterized in that: The tank (10) is also equipped with a stirring device (30), which is a three-bladed paddle-type push-down agitator. The lowest blade of the stirring device (30) is lower than the lower end of the guide plate (20).

6. The continuous manganese sulfate leaching reaction tank according to claim 5, characterized in that: The guide plate (20) is further provided with a reinforcing plate (40) on the side away from the side wall of the tank (10), and the reinforcing plate (40) is in contact with the surface of the guide plate (20).

7. The continuous manganese sulfate leaching reaction tank according to claim 6, characterized in that: The reinforcing plate (40) is located on the front side of the guide plate (20), the height of the reinforcing plate (40) is the same as the height of the guide plate (20), and the arc length of the reinforcing plate (40) is at least half the arc length of the guide plate (20).

8. The continuous manganese sulfate leaching reaction tank according to claim 1, characterized in that: An inspection port (13) is also provided on the top wall of the tank (10), and the inspection port (13) is located directly above the guide plate (20).

9. The continuous manganese sulfate leaching reaction tank according to claim 1, characterized in that: A bypass switching port (14) is also provided on the side wall of the tank (10), and the bypass switching port (14) is at the same height as the liquid inlet (11).

10. A continuous manganese sulfate leaching reaction system, comprising at least three continuous manganese sulfate leaching reaction tanks as described in claim 9, characterized in that: The outlet (12) of the upstream manganese sulfate continuous leaching reaction tank is connected to the inlet (11) of the downstream manganese sulfate continuous leaching reaction tank in sequence. Alternatively, the bypass switching port (14) of the upstream manganese sulfate continuous leaching reaction tank can be connected to the inlet (11) of the downstream manganese sulfate continuous leaching reaction tank.

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